公开(公告)号：US5479550A

公开(公告)日：1995-12-26

申请号：US239529

申请日：1994-05-09

申请人： Kimihiko Nishioka ,  Katsuya Ono ,  Masaru Shiraiwa

发明人： Kimihiko Nishioka ,  Katsuya Ono ,  Masaru Shiraiwa

IPC分类号： C03B37/028 ,  C03B37/15 ,  G02B6/06

CPC分类号： C03B37/028 ,  C03B37/15 ,  G02B6/02042 ,  G02B6/06

摘要： An image fiber has a plurality of optical fibers with normalized frequencies different from one another, which is constructed so that a plurality of cores different in size and shape from one another are distributed at random in a cladding. The optical fibers include at least two kinds of optical fibers having propagation modes different in number. Thus, the image fiber is capable of suppressing cross talk to prevent the degradation of image quality.

摘要翻译： 图像光纤具有多个具有归一化频率彼此不同的光纤，其被构造成使得尺寸和形状彼此不同的多个芯在包层中随机分布。 光纤包括具有数量不同的传播模式的至少两种光纤。 因此，图像光纤能够抑制串扰以防止图像质量的劣化。

公开(公告)号：US5436767A

公开(公告)日：1995-07-25

申请号：US236680

申请日：1994-05-02

申请人： Takayuki Suzuki ,  Susumu Takahashi ,  Kimihiko Nishioka

发明人： Takayuki Suzuki ,  Susumu Takahashi ,  Kimihiko Nishioka

IPC分类号： G02B23/24 ,  G02B13/18

CPC分类号： G02B9/12 ,  G02B23/243

摘要： An objective lens system for endoscopes comprising, in order from the object side, a first lens component having negative refractive power, a second lens component having positive refractive power and a third lens component having positive refractive power; wherein astigmatism is corrected favorably by using an aspherical surface in the third lens component or an aperture stop is arranged between the second lens component and an image surface of the objective lens system, and aberrations including chromatic aberration are corrected favorably.

摘要翻译： 一种用于内窥镜的物镜系统，包括从物体侧开始具有负折光力的第一透镜部件，具有正屈光力的第二透镜部件和具有正折光力的第三透镜部件; 其中通过在第三透镜部件中使用非球面来适当地校正像散，或者在第二透镜部件和物镜系统的图像表面之间布置孔径光阑，并且有利地校正包括色像差的像差。

公开(公告)号：US5212375A

公开(公告)日：1993-05-18

申请号：US772243

申请日：1991-10-07

申请人： Hisashi Goto ,  Tsutomu Uzawa ,  Yoshihiro Kawano ,  Hiroyuki Kurita ,  Hideaki Yoshida ,  Akira Hasegawa ,  Kimihiko Nishioka

发明人： Hisashi Goto ,  Tsutomu Uzawa ,  Yoshihiro Kawano ,  Hiroyuki Kurita ,  Hideaki Yoshida ,  Akira Hasegawa ,  Kimihiko Nishioka

IPC分类号： G02B5/32 ,  G02B7/28 ,  G03B7/099

CPC分类号： G02B5/32 ,  G02B7/28 ,  G03B7/09972 ,  G03B7/09976

摘要： An imaging system having a focus detecting device performs focus detection by detecting an output signal indicative of intensity distribution of light derived from a light-receiving element, in which at least one holographic optical element is arranged on the object side of a primary imaging plane to form an image on the light-receiving element. Thus, the imaging system has significant advantages in practical use that the arrangement is simple and the camera body is made compact.

摘要翻译： 具有焦点检测装置的成像系统通过检测指示从光接收元件导出的光的强度分布的输出信号来执行焦点检测，其中至少一个全息光学元件被布置在主成像平面的物体侧， 在光接收元件上形成图像。 因此，成像系统在实际应用中具有显着的优点，即布置简单，并且相机体紧凑。

公开(公告)号：US5177605A

公开(公告)日：1993-01-05

申请号：US870754

申请日：1992-04-20

申请人： Susumu Takahashi ,  Tsutomu Igarashi ,  Atsushi Miyazaki ,  Kimihiko Nishioka ,  Akira Hasegawa ,  Masahiro Chiba ,  Koji Takamura

发明人： Susumu Takahashi ,  Tsutomu Igarashi ,  Atsushi Miyazaki ,  Kimihiko Nishioka ,  Akira Hasegawa ,  Masahiro Chiba ,  Koji Takamura

IPC分类号： A61B1/05 ,  G02B17/08 ,  G02B23/24

CPC分类号： G02B23/2423 ,  A61B1/05

摘要： In order to enable to sufficiently deflect the viewing direction for a distal end having an end surface substantially perpendicular to the optical axis of an objective optical system and minimize aberrations produced due to the deflecting action, the objective optical system for endoscopes comprises at least one surface designed as a deflecting surface or an eccentric surface on the image side of the surface nearest the object to be observed out of the surfaces of the optical components composing the objective optical system so that the light is refracted at least twice for deflecting the viewing direction. In order to shorten total length and minimize outside diameter of the objective optical system and enable to sufficiently eliminate the infrared light incident from the object, the objective optical system comprises at least one optical component made of a substance absorbing the light having the oscillation frequency of the YAG laser light and interference films reflecting the light having the oscillation frequency of the YAG laser light formed on the cemented surfaces of the optical components and/or the surface of emergence of a rear group designed as a positive lens component.

摘要翻译： 为了能够使具有基本上垂直于物镜光学系统的光轴的端面的远端足够偏转观察方向，并且使由于偏转动作产生的像差最小化，内窥镜用物镜系统包括至少一个表面 被设计为在构成物镜光学系统的光学部件的表面之外最靠近被观察物体的表面的像侧上的偏转表面或偏心表面，使得光被折射至少两次以偏转观察方向。 为了缩短物镜光学系统的总长度和最小化外径，能够充分消除从物体入射的红外光，物镜光学系统包括至少一个光学部件，该光学部件由吸收具有振荡频率 反射具有形成在光学部件的胶合表面上的YAG激光的振荡频率的光和/或设计为正透镜部件的后组的出射表面的YAG激光和干涉膜。

公开(公告)号：US5150234A

公开(公告)日：1992-09-22

申请号：US787139

申请日：1991-11-04

申请人： Susumu Takahashi ,  Akira Takano ,  Hirofumi Miyanaga ,  Hisanari Shimazu ,  Kimihiko Nishioka ,  Akitoshi Toda ,  Masaru Shiraiwa ,  Akira Taniguchi

发明人： Susumu Takahashi ,  Akira Takano ,  Hirofumi Miyanaga ,  Hisanari Shimazu ,  Kimihiko Nishioka ,  Akitoshi Toda ,  Masaru Shiraiwa ,  Akira Taniguchi

IPC分类号： G02B3/14 ,  G02F1/1345 ,  G02F1/1347 ,  G02F1/29

CPC分类号： G02F1/29 ,  A61B1/0019 ,  G02B3/14 ,  G02F1/1345 ,  G02F1/1347 ,  G02F2001/294

摘要： An imaging apparatus is provided with a negative lens, a variable focussing lens unit including a material with an electrooptic effect, a light blocking unit, including the material with the electrooptic effect, capable of changing an aperture diameter, and a switch, interlocked with each other, capable of supplying electric power to the variable focussing lens unit and the light blocking unit which are arranged in order on an optical axis from an object side to an image side. When the switch is turned off, the variable focussing lens unit is set to bring an object at a far point into focus and the light blocking unit is set so that an aperture is determined by an aperture stop, while on the other hand, when the swtich is turned on, the variable focussing lens unit is set so that an object at a near point is in focus and the light blocking unit is set to be smaller in aperture. Apertures different in size are determined by a plurality of annular transparent electrodes incorporated in the light blocking unit and configured concentrically. Thus the imaging apparatus can be constructed to be small or compact in size and is easy in manufacturing.

摘要翻译： 一种成像装置设置有负透镜，包括具有电光效应的材料的可变聚焦透镜单元，包括具有电光效应的材料，能够改变光圈直径的光阻挡单元和与每个 另一方面，能够对从物侧到像侧的光轴依次配置的可变聚焦透镜单元和遮光单元供电。 当开关关闭时，可变聚焦透镜单元被设置为使物体在远点处聚焦并且遮光单元被设置为使得孔径由孔径光阑确定，而另一方面，当 开启可变焦点透镜单元，使近点处的物体成为焦点，并将遮光单元设定得较小。 尺寸不同的孔径由结合在遮光单元中的多个环形透明电极确定并同心配置。 因此，成像装置可以被构造成尺寸小或紧凑，并且制造容易。

公开(公告)号：US5014121A

公开(公告)日：1991-05-07

申请号：US396223

申请日：1989-08-21

申请人： Akira Hasegawa ,  Susumu Takahashi ,  Koyoshi Tsuji ,  Kimihiko Nishioka ,  Hiroshi Matsui

发明人： Akira Hasegawa ,  Susumu Takahashi ,  Koyoshi Tsuji ,  Kimihiko Nishioka ,  Hiroshi Matsui

IPC分类号： H04N5/225

CPC分类号： H04N5/2259 ,  H04N5/2253 ,  H04N5/2254 ,  H04N2005/2255

摘要： An image pickup system with an illuminating device capable of sequentially irradiating three kinds of color lights different from each other onto an object, an objective lens system forming images of the object with the color lights, a solid-state image sensor receiving the images of the object, a signal processing device producing individual color images of the object based on electric signals supplied from the solid-state image sensor, and a color dispersion device or a color separation device disposed in an optical path of light incident on the solid-state image sensor from the object. The color dispersion device includes the combination of variously shaped prisms and a diffraction grating, and the color separation device includes a structure compounded of dichroic mirrors, whereby the images with respective color lights are incident at positions shifted each other on the solid-state image sensor. The compound of signals indicative of individual color images makes it possible to bring about the object image with high resolution.

公开(公告)号：US4916534A

公开(公告)日：1990-04-10

申请号：US187040

申请日：1988-04-27

申请人： Susumu Takhashi ,  Tsutomu Igarashi ,  Atsushi Miyazaki ,  Kimihiko Nishioka ,  Akira Hasegawa ,  Masahiro Chiba ,  Koji Takamura

发明人： Susumu Takhashi ,  Tsutomu Igarashi ,  Atsushi Miyazaki ,  Kimihiko Nishioka ,  Akira Hasegawa ,  Masahiro Chiba ,  Koji Takamura

IPC分类号： A61B1/05 ,  G02B17/08 ,  G02B23/24

CPC分类号： G02B23/2423 ,  A61B1/00096 ,  A61B1/00101 ,  A61B1/05

摘要： In order to enable to sufficiently deflect the viewing direction for a distal end having an end surface substantially perpendicular to the optical axis of an objective optical system and minimize aberrations produced due to the deflecting action, the objective optical system for endoscopes comprises at least one surface designed as a deflecting surface or an eccentric surface on the image side of the surface nearest the object to be observed out of the surfaces of the optical components composing the objective optical system so that the light is refracted at least twice for deflecting the viewing direction. In order to shorten total length and minimize outside diameter of the objective optical system and enable to sufficiently eliminate the infrared light incident from the object, the objective optical system comprises at least one optical component made of a substance absorbing the light having the oscillation frequency of the YAG laser light and interference films reflecting the light having the oscillation frequency of the YAG laser light formed on the cemented surfaces of the optical components and/or the surface of emergence of a rear group designed as a positive lens component.

摘要翻译： 为了能够使具有基本上垂直于物镜光学系统的光轴的端面的远端足够偏转观察方向，并且使由于偏转动作产生的像差最小化，内窥镜用物镜系统包括至少一个表面 被设计为在构成物镜光学系统的光学部件的表面之外最靠近被观察物体的表面的像侧上的偏转表面或偏心表面，使得光被折射至少两次以偏转观察方向。 为了缩短物镜光学系统的总长度和最小化外径，能够充分消除从物体入射的红外光，物镜光学系统包括至少一个光学部件，该光学部件由吸收具有振荡频率 反射具有形成在光学部件的胶合表面上的YAG激光的振荡频率的光和/或设计为正透镜部件的后组的出射表面的YAG激光和干涉膜。

公开(公告)号：US4895433A

公开(公告)日：1990-01-23

申请号：US303980

申请日：1989-01-31

申请人： Susumu Takahashi ,  Minoru Okabe ,  Akira Hasegawa ,  Kimihiko Nishioka

发明人： Susumu Takahashi ,  Minoru Okabe ,  Akira Hasegawa ,  Kimihiko Nishioka

IPC分类号： A61B1/00 ,  G02B3/00 ,  G02B5/00 ,  G02B5/04 ,  G02B23/24 ,  G02B23/26

CPC分类号： G02B3/0087 ,  G02B23/2423

摘要： A visual field converting optical system comprising an inhomogeneous medium lens or a prism in which refractive index is linearly changed in a direction different from that of travel of light, in order to be able to perform a visual field conversion with a simple and compact configuration, without generating aberration.

摘要翻译： 一种包括不均匀介质透镜或棱镜的视场转换光学系统，其中折射率在与光行进方向不同的方向上线性地改变，以便能够以简单紧凑的配置进行视场转换， 而不产生像差。

公开(公告)号：US4867546A

公开(公告)日：1989-09-19

申请号：US170703

申请日：1988-03-14

申请人： Kimihiko Nishioka ,  Kikumi Tojo ,  Akira Yokota

发明人： Kimihiko Nishioka ,  Kikumi Tojo ,  Akira Yokota

IPC分类号： G02B13/04 ,  G02B13/18 ,  G02B23/24

CPC分类号： G02B23/243 ,  G02B13/06

摘要： An objective lens system for an endoscope comprising a front lens unit, a stop, and a rear lens unit wherein the front lens unit comprises a lens component arranged that the surface on the object side thereof is formed as an aspherical surface having portions whose curvature is made gradually stronger as they are farther from the optical axis or a lens component arranged that the surface on the image side thereof is formed as an aspherical surface having portions whose curvature is made gradually weaker as they are farther from the optical axis, and the rear lens unit comprises a lens component arranged that the surface on the image side thereof is formed as an aspherical surface having portions whose curvature is made gradually stronger as they are farther from the optical axis or a lens component arranged that the surface on the object side thereof is formed as an aspherical surface having portions whose curvature is made gradually weaker as they are farther from the optical axis, the objective lens system for an endoscope being arranged that distortion and curvature of field are corrected favorably.

摘要翻译： 一种用于内窥镜的物镜系统，其包括前透镜单元，止挡件和后透镜单元，其中，所述前透镜单元包括透镜部件，所述透镜部件布置成使得物体侧的表面形成为非球面，所述非球面具有曲率为 随着它们离开光轴更远，或者使得其像侧的表面形成为非球面的透镜部件，其具有随着其远离光轴而使曲率逐渐变弱的部分的非球面，并且后 透镜单元包括透镜部件，其布置成使得其像侧上的表面形成为非球面，该非球面表面的曲率随着离开光轴的距离逐渐变强，或者透镜部件被布置为使得其物体侧的表面 形成为具有其曲率逐渐变弱的部分的非球面，因为它们离光轴更远 e用于内窥镜的物镜系统被布置成有利地校正畸变和曲率。

公开(公告)号：US4807026A

公开(公告)日：1989-02-21

申请号：US28195

申请日：1987-03-19

申请人： Kimihiko Nishioka ,  Hisao Yabe

发明人： Kimihiko Nishioka ,  Hisao Yabe

IPC分类号： A61B1/00 ,  A61B1/05 ,  G02B23/24 ,  H04N5/225 ,  H04N5/335 ,  H04N5/3728 ,  H04N5/378 ,  H04N7/18 ,  A61B1/06

CPC分类号： G02B23/2484 ,  A61B1/05 ,  H04N5/2256 ,  H04N2005/2255

摘要： An electronic image pickup device for endoscopes is arranged so that at least two filters having mutually different transmitting wavelength ranges are inserted either alternatively or as a rotatable filter disc into an optical path of either an illuminating system or an image pickup system in order to make it possible to obtain either alternatingly or simultaneously color images produced by at least two kinds of rays having mutually different wavelength ranges. As an alternative the filter disc may be tilted relative to the optical axis.

摘要翻译： 一种用于内窥镜的电子摄像装置被布置成使得具有相互不同的透射波长范围的至少两个滤光器可替换地或作为可旋转滤光片插入到照明系统或图像拾取系统的光路中，以便使其 可以交替地或同时地获得由具有相互不同的波长范围的至少两种射线产生的彩色图像。 作为替代，滤光片可以相对于光轴倾斜。